Improvement in traps for wash-basins



0. B. EVANS. Trap for Wash-Basins, &G,

No. 220,064. Patented Sept. 30,1879.

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I r f l 4 f f f f n l I f g r TTORNEZS" N. PETERS, FHOTO-UTMOGRAPHER, VVASHINLWON4 D C UNITED STATES PATENT FFIE.

OTHNIEL B. EVANS, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN TRAPS FOR WASH-BASINS, 800.

Specification forming part of Letters Patent No. 220,064, dated September 30, 1879 application tiled February 11, 1879.

To all 'whom it may concern:

Be it known that I, OTHNIEL B. EVANS, of Philadelphia., in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Seals and Traps for Wash-Basins, Water-Glosets, 8vo., and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference bein g had to the accompanying drawings, which form part of this specification, in which- Figure l is a longitudinal vertical section of my invention, showing the waste-water pipe sealed; and Fig. 2 is a like View with the sealing-valve raised, thereby affording a free outlet for the waste-water.

My invention has for its object to provide a trap or seal joint in connection with wash basins, water-closets, &c., which will eifectiially prevent the admission through the pipes leading therefrom of sewer and other deleterious gases and vapors into dwelling-houses 'and other abodes.

My invention relates 'to the provision and use `of a mercury seal in the waste-pipe of wash-basins, water-closets, &c. 5, and consists in the peculiar construction and arrangement `.fof such seal and its combination with appurtenant parts, as hereinafter set forth.

Referring to the accompanying drawings, A designates the wash-basin of a stationary stand, the bowl of a wate11closet,or equivalent part of any similar structure; and B, the

waste-pipe leading therefrom. C is a bulb or enlargement, forming a part of said pipe or constituting a joint therein, and is preferably made in two sections, C1 C2, having flanges c c1, fastened together by screws c2. The upper section, C1, is nearly hemispherical in form, having a neck, c3, whichis united by means of a union, D, with the throat B of the basin. The lower section, G2, is in the form of a trough, with central hollow boss, c4, the bore or opening through which is flaring, as shown. The

continuation of this boss is connected, by a screw-coupling or equivalent means, with a pipe, E, which leads to the sewer or other conduit or receptacle indicated by the part marked F.

The section G1 is formed/ with two parallel lugs, c5, which extend down into the channel in the section C2, between the boss' c4 and the surrounding wall c6. Within said lugs is pivoted an ear, g, on a cap, G, which latter is so arranged as to tit snugly on'the top of the boss c4, as shown in Fig. 1, with freedom of upward motion on its pivot g1, as shown in Fig. 2. When said cap is down i\ts annular or edge liange g2 passes below the upper surface of Jthe boss c4, and enters a body of quicksilver, H, held in the trough or channel c", between said boss and the wall c6, thereby forming a perfectly tight seal, through which gases 0r vapors ascending through the pipe E cannot pass.

rJhe cap G is formed with an eye, g3, for the reception and fastening of the end of a cord or chain, I, that passes through an opening, c, in the upper section, C, of the trap, and thence upwardly, as shown, through the fixture in which the basin A, or its equivalent, is

llocated, being there secured to a'button, stopple, handle, or equivalent device.

The operation is brieiiy as follows The trough G2 is duly charged with mercury, as indicated in the drawings. The cap G, when resting, as it normally does, on the boss c4, has its flange g2 submerged, as shown, in the mercury, a perfectly t-ight seal being thereby formed, which will prevent the 'ascent to the basin A of any gases or vapors through the pipe E.

When it i's desired to empty the basin, its stopple al is drawn out and the cap Gr at the same time raised to the position shown in Fig. 2, the stopplechain a2 and the cap-cord I being so connected, if desired, that one motion will lift both said cap and stopple. This allows free egress to the water from the basin through the pipe E.

Should the cap Gr fail to be raised when the stopple al is lifted, no injury will be done, as the water will simply be collectedabove the mercury without displacing the latter, and will nd its way out when said cap is dulyT elevated.

What I claim as my invention is- In testimony that I claim the foregoing I The trap consisting of the sections C102, have hereunto set my hand this 8th day of the latter having boss c4 and trough for hold February, 187 9.

ing mercury, with cap Gr, adapted to fit over OTHNIEL B. EVANS. said boss and have its ange g2 enter the Witnesses: mercury held in said trough, substantially as S. J. VAN STAVOREN,

shown and described. GHAS. F. VAN HORN. 

